4090065 has 16 divisors (see below), whose sum is σ = 7479168. Its totient is φ = 1869696.

The previous prime is 4090061. The next prime is 4090069. The reversal of 4090065 is 5600904.

It is an interprime number because it is at equal distance from previous prime (4090061) and next prime (4090069).

It is not a de Polignac number, because 4090065 - 2² = 4090061 is a prime.

It is not an unprimeable number, because it can be changed into a prime (4090061) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19372 + ... + 19581.

It is an arithmetic number, because the mean of its divisors is an integer number (467448).

Almost surely, 2^4090065 is an apocalyptic number.

It is an amenable number.

4090065 is a deficient number, since it is larger than the sum of its proper divisors (3389103).

4090065 is a wasteful number, since it uses less digits than its factorization.

4090065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38968.

The product of its (nonzero) digits is 1080, while the sum is 24.

The square root of 4090065 is about 2022.3909117676. The cubic root of 4090065 is about 159.9226839992.

Adding to 4090065 its reverse (5600904), we get a palindrome (9690969).

The spelling of 4090065 in words is "four million, ninety thousand, sixty-five".